Finding the Fourth Proportional to 15,366,482.18, 21,205,738.41 and 8,490,904.10
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Solution
The fourth proportional to 15,366,482.18, 21,205,738.41 and 8,490,904.10 is: 11,717,443.79
Step by Step Solution
- Step 1: Write the proportion equation
15,366,482.18 : 21,205,738.41 = 8,490,904.10 : x - Step 2: Convert to fraction form
15,366,482.18/21,205,738.41 = 8,490,904.10/x - Step 3: Cross multiply
15,366,482.18x = 21,205,738.41 × 8,490,904.10 - Step 4: Simplify right side
15,366,482.18x = 180,055,891,208,996.47 - Step 5: Solve for x
x = 180,055,891,208,996.47/15,366,482.18 - Step 6: Final answer
x = 11,717,443.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.